結果
問題 | No.1181 Product Sum for All Subsets |
ユーザー | tokusakurai |
提出日時 | 2020-08-21 22:30:44 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 38 ms / 2,000 ms |
コード長 | 3,420 bytes |
コンパイル時間 | 2,111 ms |
コンパイル使用メモリ | 201,588 KB |
実行使用メモリ | 6,656 KB |
最終ジャッジ日時 | 2024-10-15 05:58:13 |
合計ジャッジ時間 | 3,239 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 5 ms
6,528 KB |
testcase_01 | AC | 6 ms
6,656 KB |
testcase_02 | AC | 6 ms
6,656 KB |
testcase_03 | AC | 6 ms
6,528 KB |
testcase_04 | AC | 6 ms
6,528 KB |
testcase_05 | AC | 6 ms
6,528 KB |
testcase_06 | AC | 5 ms
6,528 KB |
testcase_07 | AC | 5 ms
6,400 KB |
testcase_08 | AC | 5 ms
6,528 KB |
testcase_09 | AC | 5 ms
6,528 KB |
testcase_10 | AC | 6 ms
6,528 KB |
testcase_11 | AC | 6 ms
6,656 KB |
testcase_12 | AC | 32 ms
6,400 KB |
testcase_13 | AC | 10 ms
6,656 KB |
testcase_14 | AC | 31 ms
6,528 KB |
testcase_15 | AC | 25 ms
6,528 KB |
testcase_16 | AC | 33 ms
6,528 KB |
testcase_17 | AC | 16 ms
6,656 KB |
testcase_18 | AC | 30 ms
6,528 KB |
testcase_19 | AC | 29 ms
6,656 KB |
testcase_20 | AC | 33 ms
6,528 KB |
testcase_21 | AC | 20 ms
6,528 KB |
testcase_22 | AC | 13 ms
6,528 KB |
testcase_23 | AC | 9 ms
6,528 KB |
testcase_24 | AC | 13 ms
6,656 KB |
testcase_25 | AC | 19 ms
6,656 KB |
testcase_26 | AC | 7 ms
6,528 KB |
testcase_27 | AC | 6 ms
6,656 KB |
testcase_28 | AC | 38 ms
6,656 KB |
testcase_29 | AC | 36 ms
6,528 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i, n) for(int i = 0; i < n; i++) #define rep2(i, x, n) for(int i = x; i <= n; i++) #define rep3(i, x, n) for(int i = x; i >= n; i--) #define elif else if #define sp(x) fixed << setprecision(x) #define pb push_back #define eb emplace_back #define all(x) x.begin(), x.end() #define sz(x) (int)x.size() using ll = long long; using ld = long double; using pii = pair<int, int>; using pil = pair<int, ll>; using pli = pair<ll, int>; using pll = pair<ll, ll>; const ll MOD = 1e9+7; //const ll MOD = 998244353; const int inf = (1<<30)-1; const ll INF = (1LL<<60)-1; const ld EPS = 1e-10; template<typename T> bool chmax(T &x, const T &y) {return (x < y)? (x = y, true) : false;}; template<typename T> bool chmin(T &x, const T &y) {return (x > y)? (x = y, true) : false;}; template<ll mod> struct Mod_Int{ ll x; Mod_Int() {} Mod_Int(ll y) : x (y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} Mod_Int &operator += (const Mod_Int &p){ x = (x + p.x) % mod; return *this; } Mod_Int &operator -= (const Mod_Int &p){ x = (x + mod - p.x) % mod; return *this; } Mod_Int &operator *= (const Mod_Int &p){ x = (x * p.x) % mod; return *this; } Mod_Int &operator /= (const Mod_Int &p){ *this *= p.inverse(); return *this; } Mod_Int &operator ^= (ll k){ Mod_Int ret = 1; while(k){ if(k&1) ret *= *this; *this *= *this, k >>= 1; } swap(x, ret.x); return *this; } Mod_Int &operator ++ () {return *this += Mod_Int(1);} Mod_Int operator ++ (int){ Mod_Int tmp = *this; ++*this; return tmp; } Mod_Int &operator -- () {return *this -= Mod_Int(1);} Mod_Int operator -- (int){ Mod_Int tmp = *this; --*this; return tmp; } Mod_Int operator - () const {return Mod_Int(-x);} Mod_Int operator + (const Mod_Int &p) const {return Mod_Int(*this) += p;} Mod_Int operator - (const Mod_Int &p) const {return Mod_Int(*this) -= p;} Mod_Int operator * (const Mod_Int &p) const {return Mod_Int(*this) *= p;} Mod_Int operator / (const Mod_Int &p) const {return Mod_Int(*this) /= p;} Mod_Int operator ^ (ll k) const {return Mod_Int(*this) ^= k;} bool operator == (const Mod_Int &p) const {return x == p.x;} bool operator != (const Mod_Int &p) const {return x != p.x;} Mod_Int inverse() const {return *this ^ (mod-2);} friend ostream &operator << (ostream &os, const Mod_Int &p){ return os << p.x; } friend istream &operator >> (istream &is, Mod_Int &p){ ll a; is >> a; p = Mod_Int<mod>(a); return is; } }; using mint = Mod_Int<MOD>; const int MAX_N = 200000; mint fac[MAX_N+1], ifac[MAX_N+1]; void init(){ fac[0] = 1; rep2(i, 1, MAX_N){ fac[i] = fac[i-1]*i; } ifac[MAX_N] = fac[MAX_N].inverse(); rep3(i, MAX_N, 1){ ifac[i-1] = ifac[i]*i; } } mint comb(int n, int k){ return fac[n]*ifac[n-k]*ifac[k]; } mint perm(int n, int k){ return fac[n]*ifac[n-k]; } int main(){ init(); int N; ll K; cin >> N >> K; mint x = K, tw = 2, y = x*(x+1)/tw; mint ans = 0; rep(i, N){ mint a = y^i, b = x^(N-i), c = comb(N, i); ans += a*b*c; } cout << ans << endl; }